INSPECTION PROCEDURE C-5: The tailgate cannot be opened or closed.




COMMENT ON TROUBLE SYMPTOM
If the tailgate can not be locked or unlocked by the central door locking system, the tailgate lock actuator or the ETACS-ECU may be defective.

POSSIBLE CAUSES

  • Malfunction of the tailgate lock actuator
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check that the central door locking system and the keyless entry system operate.
Check that the doors (excluding the tailgate) are locked and unlocked normally when the central door locking and keyless entry systems are operated.

Q. Is the check result normal?
Go to Step 2
<When the central door locking does not operate normally> Refer to Inspection Procedure C-1 "Central door locking system does not work ." <When the keyless entry system does not operate normally> Refer to Inspection Procedure E-1 "Keyless Entry System does not Work ."

Step 2. SWS monitor data list
Check the SWS communication input signal, which are related to the tailgate opening and closing.
<Selected item> ETACS ECU
  • Ignition switch: from OFF to ON
Item No.
 Item name
 Normal condition
Item 30
 IG SW(IG1)
 from OFF to ON
OK: Normal condition is displayd.

Q. Is the check result normal?
Go to Step 3.
Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ."

Stap 3. ETACS switch data by using the SWS monitor
Check the ETACS-ECU signal related to the tailgate opening and closing.

  • Tailgate lock release handle: from OFF to ON
Item No.
 Item name
 Normal conditions
Item 30
 GTE OPENER SW
 OFF to ON (only when switch is operated)
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 4.
Replace the ETACS-ECU.

Step 4. Connector check: G-17 tailgate lock actuator connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

Step 5. Check the tailgate lock actuator.
Check that the tailgate lock actuator is in good condition. Refer to GROUP 42 - Tailgate .

Q. Is the check result normal?
Go to Step 6.
Replace the tailgate lock actuator.

Step 6. Resistance measurement at the G-17 tailgate lock actuator connector.

(1)Disconnect the connector, and measure at the wiring harness side.

(2)Resistance between G-17 tailgate lock actuator connector terminal No.2 and body earth
OK: 2 Ω or less

Q. Is the check result normal?

Go to Step 8.

Go to Step 7.

Step 7. Check the wiring harness between G-17 tailgate lock actuator connector terminal No.2 to the body earth.


  • Check the earth wires for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

Repair the wiring harness.

Step 8. Connector check: C-221 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 9.

Repair the defective connector.

Step 9. Check the wiring harness from C-221 ETACS-ECU connector terminal No.61 to G-17 tailgate lock actuator connector terminal No.1.




note Prior to the wiring harness inspection, check intermediate connector C-16, G-14, and repair if necessary.

  • Check the input and output lines for open circuit.

Q. Is the check result normal?

Go to Step 10.

Repair the wiring harness.

Step 10. Retest the system.
Check that the tailgate lock works normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.